Rolling mill



G. ASBECK ROLLING HILL Feb. 23, 1932.

2 Sheets-Sheet l Filed March '7, 1929 .ivlv

l l f Mm y C. f.

zu lez-nay Feb. 23, 1932.

G. AsBEcK ROLLING MILL Filed March 7, 1929 2 Sheets-Sheet 2 lu rolls.

Patented Feb. 23, 1932 PATENT; OFFICE GUSTAV SBEGK, 10F DUSSELDORF-BATH, GERMAY ROLLNG MILL Application led March l?, 1929, Serial No. 345,027, and in Germany November 2, 1923.

lily invention relates to improvements in rolling mills, and more particularly in mills ol' the type in which a plurality oit' rolls disposed radially of the blank b'eing rolled are l; driven by means of a common gear Wheel disposed concentrically of the blank being rolled the gearing ordinarily comprising a hyperbolic concentric gear Wheel meshing with pinions connected with the individual The object of the improvements is to provide a driving mechanism oi the type indicated in which the rolls can be readjusted in case ot Wear Without interfering With the proper engagement of the teeth or the gear mg. Another object of the improvements is to provide a driving mechanism in which the rolls can be readily dismounted Without disinounting the driving gear. Further, an object or the improvements is to construct the driving mechanism so that the proper engagement of the gear teeth is not interfered 'with when adjusting or dismounting the rolls. WWith these objects in View my invention consists in constructing the shafts carrying the rolls and the driving gears thereof in two sections coupled With each other so as to permit radial displacement of the rolls relatively to the blank being rolled. Further, the section oi the shaft carrying the roll is mounted so as to be axially shitable in its bearing.

liter the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawings in which the same reference characters have been used in all the views to indicate corresponding parts. In said drawings,

lllig. l is an elevation partly in section showing a mill provided "with sets of three rolls, liig.. 2 is a sectional elevation taken on the line 2-2 of Fig. l,

llig. 3 is a sectional elevation on an en-I larged scale showing one of' the rolls and its driving mechanism,

llig. Il is a sectional plan view taken on the line l-d of Fig. 3,

lHig. 5 is a detail view showing the means tor coupling the sectional shaft ot the roll,

and

Fig. 6 is a diagam showing the manner of tm adjusting 'the rol In the example shown in the figures the mill comprises a lrame composed of two sections connected with each other by flanges 2G each section being formed with an axial tubular portion 2 having a tubular member 28 mounted therein for guiding the blank being rolled. ln the example shown in Figs. l and 2 at each side of the frame three rolls a; are mounted, which are disposed radially of the axis of the mill, each of the said rolls being secured to a shaft made in two sections w and e, y coupled with each other by means of a coupling disk 17, as will be described hereinafter. The section .e of the shaft is coupled With a tubular shaft y carrying a gear wheel and the gear Wheelsf connected with all the rolls of each set are in mesh With a hyperbolic gear wheel ddisposed concentrically ofthe axis or' the mill. As appears from Fig. 2, two hyperbolic gear Wheels d are provided at opposite sides of the median plane passed through the mill, and the gear Wheels are secured to a spur gear 29 rotatably mounted on the portions 27 by means ot' antifriction bearings 30 and in driving engagement with a pinion 3l keyed to the shaft or' a motor 32.

The sectional shaft a' of each roll is mounted in a cylindrical casing 3 embedded in a semi-cylindrical cavity 6 of the frame 25, all the said cavities being covered by a head 7 formed With similar semi-cylindrical cavities corresponding to the cylindrical casings 3. The cylindrical casings 3 are connected with the head 7 for example by means of hails 8 embracing the casings and fixed in position by means of nuts 33, as is shown in Fig. 4, so that all the casings and the parts carried thereby are removed when dismounting the head 7. The bails 8 are located in annular grooves made in the Walls ofthe cavities 6.

The sectional shaft :v is eccentrically mounted Within the casing 3 by means of anti-friction bearings 2, the said casing being provided with an eccentric bore receiving the said anti-friction bearings, as is shown in Fig. 4. Therefore, by turning the casings 3 about their axes the rolls are adjusted radially of the axis of the mill. Suitable means are provided for thus turning the casings 3.

AAs shown in Fig. 4, the casing 3 is provided head 7. Thus, by turning the nut 5 the rack 4 is 'shifted to the right or left for turning the casing 3. 'I wish it to be understood that my invention is not limited to the means for turning the casings 3.

The casings 3 are axially adjustable in their cavities. Asshown,thesaidcasingsarescrewthreaded at their outer ends, and kinternally screw-threaded rings 9 are screwing on said screw-threaded ends, which rings 9 are provided with circumferential grooves 50 engaged by collars 51 projecting inwardly from the semi-cylindrical cavities of the frame 25 and the head 7. Thus, by screwing the rings 9 inwardly or outwardly the rolls a are ad- 'usted in axial direction. After thus adjusting the rolls the rings 9 are fixed in position by check nuts 10.

The tubular shaft y carrying the hyperbolic gpar wheel f is mounted by means of antiiction bearings 11 and 12 in a sleeve 13 disposed in a cylindrical portion 14 made integral with the frame 25, the sleeve 13 being adapted to be put into the portion 14 from the outer end thereof, and it is fixed in position by means of a head 38 secured to the portion 14.

The shaft section z is formed at its bottom with an enlarged head 15 connected with the rim of the gear wheel f by feather keys 21, and the shaft Section a: is formed at its top with a similar head 16. Between the heads 15 and 16 there is a disk 17 formed at its top and bottom sides with ribs 18 and 19 disposed at right angles to each other and engaging in corresponding grooves 39 and 40 formed in the heads 15 and 16. The rib 19 and the groove 39 are dove-tailed in cross-section, so that the disk 17 follows the movement of the shaft section a in axial direction and is adapted to be retracted out of coupling engagement with the shaft section at, as is necessary for removing the head 7, the casings 3 and the rolls a from the mill. By reason of the coupling disk 17 and the ribs 18 and 19 thereof disposed at right angles the shaft sections :v and z can be brought out of alignment for Vadjusting the rolls a radially of the mill,

without interfering with the proper engagement of the parts and the transmission of the power from the shaft section a to the shaft section ar. I wish it to be understood that the coupling means shown herein are merely an example of such means, and that other coupling means having a similar function may be provided, such for example as universal joints, coupling spindles, and the like.

The shaft sections is adapted to be retracted with the disk 17 out of engagement with the shaft section by means of a hand wheel 20 connected with the shaft section :v and screwing in the head 38. The shaft z is rotatably connected with the said nut by means of an anti-friction bearing 42 located in a socket of the hub 43 of the hand wheel and held in position therein by means of a nut 44, the inner race rin 45 of the anti-friction bearing being secure to the top end of the shaft z by bearing on a shoulder 46 and being clamped thereon by means of nuts 47.

In order to reduce displacement of the shaft sections a; and a when adjusting the rolls a, I prefer to mount the same relatively to each other in the manner indicated in the diagram shown in Fig. 6. In the said diagram the character I indicates the axis of the casing 3, and the characters II1 and 112 indicate the end positions of the axis of the shaft section resulting from rotation of the casing 3 by means of the rack 4. The character III indicates the axis of the gear wheel f and the Y shaft section a. Thus, the radial displacement of the rolls a is represented by the distance between the points II1 and IP.

It may be remarked that in Fig. 3 the mill is provided at each side with four rolls a.

While in describing the invention reference has been made to a particular example embodying the same I wish it to be understood that my invention is not limited to the construction shown in the drawings, and that various changes may be -made in the general arrangement of the apparatus and the constructlon of its parts without departing from the invention.

I claim:

1. A rolling mill, comprising a frame, a plurality of radially disposed rolls, drivin means for said rolls, shafts connecting sai driving means and rolls and each made 1n sections cou led with each other, rotatable bearing mem ers in which the shaft sections connected with the rolls are eccentrically mounted, and means for shifting said bearing members on said frame in the direction oftheir axes.

2. A rolling mill, comprising a frame, a plurality of radially disposed rolls, drivin means for said rolls, shafts connecting sai driving means and rolls and each made in sections coupled with each other, rotatable bearing members in which the shaft sections connected with the rolls are eccentrically mounted, a head secured to said frame, and means for fixing said bearing members to said head.

3. A rolling mill, comprising a frame, a plurality of radially disposed rolls, drivin means for said rolls, shafts connecting sai driving means and rolls and each made in sections coupled with each other, cylindrical casings in which the shaft sections connected with the rolls are eccentrically mounted, said frame being formed with semi-cylindrical cavities having said cylindrical casings empas lll

till

dll

lill

till

bedded therein, ahead formed with cylindri cal cavities correspondlng to sald cylindrical casmgs and secured to said trame, means for lining said cylindrical casings to. said head,l

and means tor rotating said cylindrical casings.

Ll. A rolling mill, comprising a frame, a plurality `oi radially disposed rolls, driving means tor said rolls, and shafts connecting said driving means and rolls and each made in sections coupled with each other, the shalt sections connected With said driving means each comprising a tubular member directly connected with tbe driving means, and an inner member` axially shit'table in and nonwotatable relatively to said tubular member and coupled with the shaft section connected With the roll, and means tor moving said inner member anially and out of coupling engagement with the shaft section connected with the roll.

5. A rolling mill, comprising a frame, a plurality oitl radially disposed rolls, driving means tor said rolls, shafts connecting said driving means and rolls and each mad-e in sections, coupling disks intermediate said shalt sections, said disks and the adjacent ends of the shalt sections being provided at the opposite sides oit' the disks respectively with interengaging ribs and grooves disposed transversely ot each other, the ribs and grooves intermediate said disks and the shaft sections connected with the driving means being dove-tailed in cross-section, and the shaft sections connected With said driving means comprising' a tubular member directly con` nected with the driving means, an inner member axially shiftable and non-rotatable Within said tubular member and in engagement with said coupling disk, and means for shitting said inner member in axial direction.

l. it rolling mill, comprising a frame, a plurality ot radially disposed rolls, driving means tor said rolls, shalts connecting said driving means and rolls and each made in sections, coupling disks intermediate said shalt sections, said disks and the adjacent ends oit the shalt sections being provided at the opposite sides oit the disks respectively with intcrengaging ribs and grooves disposed transversely oli each other, the ribs and grooves intermediate said disks and the shaft sections connected with the driving means being dove'tailed in cross-section, and the shaft sections connected with said driving means comprising a ltubular member directly connected 'with the driving means and an inner member airiall shi'ftable and ncnrotatable vvitliinsaid tu ular member and in engagement with said coupling disk, and nuts screwing in said trame and carrying hand Wheels and rotatably connected respectively with said inner members.

l. il. rolling mill, comprising a trame, a plurality ot radially disposed rolls, driving means for said rolls, shafts connecting said driving means and rolls and each made in sections coupled with each other, cylindrical portions formed on said frame and enclosing said shaft sections connected With the driving means, sleeves one in each of said cylindrical portions providing bearings for the shaft sections connected with the driving means,

and heads secured to said cylindrical por inner member axially and out of coupling.

engagement With the shaft section connected with the roll.

9. In a rolling mill, comprising a trame, a plurality of radially disposed rolls, and driving means for said rolls, a shaft connecting one of said rolls with its driving means and made in sections, a coupling disk intermediate said shaft sections, said disk and the adjacent ends of the shaft sections being provided at the opposite sides Vof the disk respece tively with interengaging ribs and grooves disposed transversely of each other, the rib and groove intermediate said disk and the shaft section connected with the driving means being dove-tailed in cross-section, and a shaft section connected with said driving means comprising a tubular member directly connected With the driving means, an inner member axially shiftable and non-rotatable Within said tubular member and in engagement with said coupling disk, and means for hifting said inner member in axial direcion.

10. In a rolling mill, a frame, a Working roll, shafts operatively connected with the roll, bearing means for each shaft, adjustable coupling means for independenly demountably supporting the roll with its shaft and bearing means upon the frame, centrally mounted driving means for the roll, and means individual to the respective roll shafts :tor coupling the same to said driving means.

l1. In a rolling mill, a frame, a set ol Working rolls, driven shafts operatively connected with the respective rolls, a cylindrical casing surrounding each shaft, bearing means in each en d of the casing supporting the shaft in eccentric relation thereto, means for rotatively adjusting the casing and bearing means of each roll to radially adjust the lllti mtl roll relative to the work pass, and driving means for the roll shafts.

12. In a rolling mill, a frame, a set of working rolls, driven shafts operatively connected with the respective rolls, a cylindrical casing surrounding each shaft, bearing means in each end of the casing supporting the shaft in eccentric relation thereto, means for rotatively adjusting the casing and bearing means of each roll to radially adjust the roll relative to the work pass, means for removably mounting said rotatable casings upon the frame permitting` of the removal of each roll without disturbing the positions of the remaining rolls, and driving means for the roll shafts.

13. In a rolling` mill, a frame, a working roll, a gear centrally mounted on a shaft of said roll, driving means therefor and coupling means on the shaft for demountably supporting and adjusting the roll on the frame for releasable connection with the driving `means whereby the roll can be disconnected from the driving gear and exchanged Without taking apart the Whole frame.

14. In a rolling mill, a frame, a working roll, centrally mounted driving means for said roll, including'coupling elements adapted to be releasably connected to the roll, means for adjusting the rolls in operative position on said frame, and an independently operable device associated with each driven element whereby to release or couple the device with said roll.

In testimony whereof I hereunto aftix my signature.

GUSTAV ASBECK. 

